3 definitions found

From The Collaborative International Dictionary of English v.0.44 [gcide]:

Ah \Ah\, interj. [OE. a: cf. OF. a, F. ah, L. ah, Gr. ?, Sk. [=a], Icel. [ae], OHG. [=a], Lith. ['a], ['a]['a].] An exclamation, expressive of surprise, pity, complaint, entreaty, contempt, threatening, delight, triumph, etc., according to the manner of utterance.

From Easton's 1897 Bible Dictionary [easton]:

Ah! an exclamation of sorrow or regret (Ps. 35:25; Isa. 1:4, 24; Jer. 1:6; 22:18; Mark 15:29).

From Virtual Entity of Relevant Acronyms (Version 1.9, June 2002) [vera]:

AH [IP] Authentication Header (IPSEC, IPV6, RFC 1826, VPN)
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